7-4
IMPORTANT NOTES:
UNIT MUST BE DISCONNECTED FROM
ELEC-TRICAL OUTLET WHEN MAKING REPAIRS,
RE-PLACEMENTS, ADJUSTMENTS AND CONTIN-
UITY CHECKS. WAIT AT LEAST ONE MINUTE,
UNTIL THE HIGH VOLTAGE CAPACITOR IN THE
HIGH VOLTAGE POWER SUPPLY HAS FULLY
DISCHARGED.
THE CAPACITOR SHOULD BE DISCHARGED BY
USING INSULATED WIRE - I.E. TEST PROBE
CONNECTED TO 10K-OHM RESISTOR IN SERIES
TO GROUND.
WHEN RECONNECTING THE WIRE LEADS TO ANY
PART, MAKE SURE THE WIRING CONNE-CTIONS
AND LEAD COLORS ARE CORRECTLY MATCHED
ACCORDING TO THE OVERALL CIR-CUIT
DIAGRAM. (ESPECIALLY SWITCHES AND HIGH
VOLTAGE CIRCUIT.)
A. REMOVING POWER AND CONTROL
CIRCUIT BOARD (Figures 1, 2 and 3)
(1) Remove a screw securing the control panel
assembly to the oven cavity.
(2) Remove the control panel with pushing it upward.
(3) Remove the three connectors (CN1, CN2, CN3)
and wire leads (Relay7) from the circuit board.
(4) Remove 3 screws securing the circuit board.
(5) Remove the FPC connector from the terminal
socket following “HOW TO REMOVE THE FPC
CONNECTOR” on the next page.
(6) Remove the circuit board from the control bracket
carefully.
DISASSEMBLY INSTRUCTIONS
Power
Transformer
(CN5)-For the sensor
model only
Relay 2
(CN1)
Control Panel
(Relay 7)-White
(CN5)-For the sensor
model only
Relay 2
(CN1)
Circuit Board
Circuit Board
FPC Connector(S1)
Relay 7
Control Bracket
Circuit Board
Control Bracket
FPC Connector(S1)
Relay 7
Circuit Board
Figure 1
Figure 2
Figure 3
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Summary of Contents for MVH1670ST
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